Tag: environment and conservation

Questions Related to environment and conservation

Classical smog is

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Dark brown smog

  2. Yellow brown smog

  3. Los Angeles smog

  4. Smog with secondary pollutants

Show answer
Correct Option: A
Explanation:
Smog is the fog containing smoke. Smog is of two types depending upon the type of pollutants; classical smog and photochemical smog.
  • Classical smog is formed when there is high concentration of sulphur dioxide and particulate matter produced due to combustion of fuels. It occurs in cold and humid climate. It is also known as London smog or Sulphurous smog and causes dark brownish colour of atmosphere.
  • Photochemical smog is formed when sunlight acts on the oxides of nitrogen and hydrocarbons produced from factories or by automobiles. It occurs in warm and dry climate. It is also known as Los Angeles smog and causes light brownish colouration of atmosphere.
So, the correct answer is 'Dark brown smog'.

The term smog was coined by

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Fourier

  2. Des Voeux

  3. Schouw

  4. Ashbel

Show answer
Correct Option: B
Explanation:
A. Fourier was a French mathemathician who discovered how global warming occurs due to rise in temperature of earth's surface.
B. Des Voeux coined the term smog in 1905 to describe the condition of fog which has smoke in it.
C. J.F. Schouw was a Danish botanist who worked on phytogeography and origin of species and their evolution.
D. Ashbel with the expertise in biology and medicine worked on various scientific aspects.
So, the correct answer is 'Des Voeux'.

Which of the following disease is caused by excess pollen in the air and is characterized by collective symptoms of asthma, bronchitis and rhinitis?

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Kala azar

  2. Sleeping sickness

  3. Hay fever

  4. Yellow fever

Show answer
Correct Option: C
Explanation:

A.   A.  Kala azar is caused by bites from female phlebotomine sandflies – the vector (or transmitter) of the leishmania parasite.

B.    B.Sleeping sickness is caused by two types of parasites Trypanosoma brucei rhodesiense and Trypanosomoa brucei gambiense. Tsetse flies carry the infection

C.Hay fever is an allergic disorder characterized by an exaggerated immune response to pollen grains and other substance. It is also called allergic rhinitis which affecting the nose. Symptoms generally have runny nose, itchy eyes,mouth,skin or sneezing 
D. yellow fever is caused by the Flavivirus , and it's transmitted when an infected mosquito bites you. 
So, the correct option is 'Hay fever'.


Which of the following is NOT caused by Hydrogen sulfide pollution in the air?

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Mottled chlorosis

  2. Defoliation in plants

  3. Decolouration of paints

  4. Cardiovascular malfunction

Show answer
Correct Option: D
Explanation:

In human, effect of Hydrogen sulfide due to air pollution is not seen but in plant it greatly effect like chlorosis ( yellowish color of plant leaves). Falling of leaves is also a major problem (defoliation). Hydrogen sulfide also damage building, bridge paints (discoloration).

So correct option is 'cardiovascular malfunction'.

Air pollution is likely to be most severe

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. in the interior of continents

  2. near the center of an anticyclone

  3. in the summer

  4. when the atmosphere is turbulent

Show answer
Correct Option: B

Large increase in absorption of UV- radiation of 260 nm by melted DNA duplex is called

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Gaidukov phenomenon

  2. Position effect

  3. DNA compaction

  4. Hyperchromic effect

Show answer
Correct Option: D
Explanation:
  • The increase in the absorbance of a material is known as hyperchromicity and the effect is known as the hyperchromic effect.
  • The DNA molecule gets denatured by the hyperchromicity.
  • The absorption of UV radiation by DNA molecule increases when the two single DNA strands get separated by heat or by a heat denaturant or by changing the pH level.
  • So, the correct answer is 'Hyperchromic effect'.

Which of the following pollutants is not present in the vehicular exhaust emissions?

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Lead

  2. Ammonia

  3. Carbon monoxide

  4. Partculate matter

Show answer
Correct Option: B
Explanation:
Vehicular emissions are contributing to air quality problems, smog etc. emissions of many air pollutants have shown variety of negative effect on public health. Emission of principle pollutants like hydrocarbon, CO. $NO _x$, $SO _x$, particulate matter and volatile organic compounds are affecting natural environment and contributing to asthma, bronchitis and various diseases etc. Ammonia is not present in vehicular exhaust emissions.
So, the correct answer is 'Ammonia'.

Which particle ranges from 1 to 1000 um in diameter?

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Smoke

  2. Dust

  3. Fumes

  4. Spray

Show answer
Correct Option: B

Some effects of SO$ _2$ and its transformation products on plants include 

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Chlorophyll destruction

  2. Chlorophyll plasmolysis

  3. Golgi body destruction

  4. None of the above

Show answer
Correct Option: A
Explanation:

The presence of pollutant adversely affect the plants. Reduction in chlorophyll is caused by toxic ions formed by the dissolution of SO$ _2$ in water inside leaf tissue, which preferentially incorporate into thylakoid membrane disturbs the photosystems. The oxides of sulphur transform into several poisonous substances which hamper the growth of the plants.

So, the correct option is A.

Major source of air pollution is

business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

  1. Fossil fuels

  2. Biogas

  3. NO$ _2$

  4. Coke

Show answer
Correct Option: A